Everyday Calculators

The handy tools you reach for in real life. Calculate your exact age, check your BMI, project your GPA or the final-exam grade you need, split a restaurant tip fairly, do date arithmetic across calendars, and generate truly random numbers for games, draws, and decisions. No sign-up, no clutter — just the answer, instantly.

  • Age

    Enter your date of birth to find your exact age in years, months and days, your total days lived, the weekday you were born, and a countdown

  • BMI

    Calculate your body mass index from height and weight. Switch between metric and imperial units for instant results.

  • Date

    Find the number of days between two dates, or add and subtract days from any date. Results include weeks, workdays, and a years-months-days

  • GPA

    Add your courses, pick each letter grade, and enter credit hours. Your credit-weighted GPA on the standard 4.0 scale calculates instantly.

  • Grade

    Final exam planner: enter your current course grade, the final exam weight, and your target grade to find the exact score you need on the fi

  • Random Number Generator

    Generate random numbers in any range with cryptographically secure randomness. Choose how many numbers, allow or block duplicates, and sort

  • Tip

    Enter your bill, pick a tip percentage, and split the total. Get the tip amount, total with tip, and each person's share instantly.